thaw/src/auto_complete/mod.rs
luoxiaozero 5ab09bb281
Pref/class (#58)
* feat: add class_list macro

* fix: ssr mode class_list

* pref: replace with class_list
2023-12-23 12:25:54 +08:00

256 lines
9.3 KiB
Rust

mod theme;
use crate::{
components::{Binder, Follower, FollowerPlacement, FollowerWidth},
use_theme,
utils::{class_list::class_list, mount_style, StoredMaybeSignal},
ComponentRef, Input, InputPrefix, InputRef, InputSuffix, Theme,
};
use leptos::*;
pub use theme::AutoCompleteTheme;
#[derive(Clone, PartialEq)]
pub struct AutoCompleteOption {
pub label: String,
pub value: String,
}
#[slot]
pub struct AutoCompletePrefix {
children: Children,
}
#[slot]
pub struct AutoCompleteSuffix {
children: Children,
}
#[component]
pub fn AutoComplete(
#[prop(optional, into)] value: RwSignal<String>,
#[prop(optional, into)] placeholder: MaybeSignal<String>,
#[prop(optional, into)] options: MaybeSignal<Vec<AutoCompleteOption>>,
#[prop(optional, into)] clear_after_select: MaybeSignal<bool>,
#[prop(optional, into)] on_select: Option<Callback<String>>,
#[prop(optional, into)] disabled: MaybeSignal<bool>,
#[prop(optional, into)] invalid: MaybeSignal<bool>,
#[prop(optional, into)] class: MaybeSignal<String>,
#[prop(optional)] auto_complete_prefix: Option<AutoCompletePrefix>,
#[prop(optional)] auto_complete_suffix: Option<AutoCompleteSuffix>,
#[prop(optional)] comp_ref: ComponentRef<AutoCompleteRef>,
) -> impl IntoView {
mount_style("auto-complete", include_str!("./auto-complete.css"));
let theme = use_theme(Theme::light);
let menu_css_vars = create_memo(move |_| {
let mut css_vars = String::new();
theme.with(|theme| {
css_vars.push_str(&format!(
"--thaw-background-color: {};",
theme.select.menu_background_color
));
css_vars.push_str(&format!(
"--thaw-background-color-hover: {};",
theme.select.menu_background_color_hover
));
});
css_vars
});
let select_option_index = create_rw_signal::<usize>(0);
let menu_ref = create_node_ref::<html::Div>();
let is_show_menu = create_rw_signal(false);
let auto_complete_ref = create_node_ref::<html::Div>();
let options = StoredMaybeSignal::from(options);
let open_menu = move || {
select_option_index.set(0);
is_show_menu.set(true);
};
let allow_value = move |_| {
if !is_show_menu.get_untracked() {
open_menu();
}
true
};
let select_value = move |option_value: String| {
if clear_after_select.get_untracked() {
value.set(String::new());
} else {
value.set(option_value.clone());
}
if let Some(on_select) = on_select {
on_select.call(option_value);
}
is_show_menu.set(false);
};
let on_keydown = move |event: ev::KeyboardEvent| {
if !is_show_menu.get_untracked() {
return;
}
let key = event.key();
if key == *"ArrowDown" {
select_option_index.update(|index| {
if *index == options.with_untracked(|options| options.len()) - 1 {
*index = 0
} else {
*index += 1
}
});
} else if key == *"ArrowUp" {
select_option_index.update(|index| {
if *index == 0 {
*index = options.with_untracked(|options| options.len()) - 1;
} else {
*index -= 1
}
});
} else if key == *"Enter" {
let option_value = options.with_untracked(|options| {
let index = select_option_index.get_untracked();
if options.len() > index {
let option = &options[index];
Some(option.value.clone())
} else {
None
}
});
if let Some(option_value) = option_value {
select_value(option_value);
}
}
};
let input_ref = ComponentRef::<InputRef>::new();
input_ref.on_load(move |_| {
comp_ref.load(AutoCompleteRef { input_ref });
});
view! {
<Binder target_ref=auto_complete_ref>
<div
class=class_list!["thaw-auto-complete", move || class.get()]
ref=auto_complete_ref
on:keydown=on_keydown
>
<Input
value
placeholder
disabled
invalid
on_focus=move |_| open_menu()
on_blur=move |_| is_show_menu.set(false)
allow_value
comp_ref=input_ref
>
<InputPrefix if_=auto_complete_prefix.is_some() slot>
{if let Some(auto_complete_prefix) = auto_complete_prefix {
Some((auto_complete_prefix.children)())
} else {
None
}}
</InputPrefix>
<InputSuffix if_=auto_complete_suffix.is_some() slot>
{if let Some(auto_complete_suffix) = auto_complete_suffix {
Some((auto_complete_suffix.children)())
} else {
None
}}
</InputSuffix>
</Input>
</div>
<Follower
slot
show=is_show_menu
placement=FollowerPlacement::BottomStart
width=FollowerWidth::Target
>
<div
class="thaw-auto-complete__menu"
style=move || menu_css_vars.get()
ref=menu_ref
>
{move || {
options
.get()
.into_iter()
.enumerate()
.map(|(index, v)| {
let AutoCompleteOption { value: option_value, label } = v;
let menu_item_ref = create_node_ref::<html::Div>();
let on_click = move |_| {
select_value(option_value.clone());
};
let on_mouseenter = move |_| {
select_option_index.set(index);
};
let on_mousedown = move |ev: ev::MouseEvent| {
ev.prevent_default();
};
create_effect(move |_| {
if index == select_option_index.get() {
if !is_show_menu.get() {
return;
}
if let Some(menu_item_ref) = menu_item_ref.get() {
let menu_ref = menu_ref.get().unwrap();
let menu_rect = menu_ref.get_bounding_client_rect();
let item_rect = menu_item_ref.get_bounding_client_rect();
if item_rect.y() < menu_rect.y() {
menu_item_ref.scroll_into_view_with_bool(true);
} else if item_rect.y() + item_rect.height()
> menu_rect.y() + menu_rect.height()
{
menu_item_ref.scroll_into_view_with_bool(false);
}
}
}
});
view! {
<div
class="thaw-auto-complete__menu-item"
class=(
"thaw-auto-complete__menu-item--selected",
move || index == select_option_index.get(),
)
on:click=on_click
on:mousedown=on_mousedown
on:mouseenter=on_mouseenter
ref=menu_item_ref
>
{label}
</div>
}
})
.collect_view()
}}
</div>
</Follower>
</Binder>
}
}
#[derive(Clone)]
pub struct AutoCompleteRef {
input_ref: ComponentRef<InputRef>,
}
impl AutoCompleteRef {
pub fn focus(&self) {
if let Some(input_ref) = self.input_ref.get_untracked() {
input_ref.focus();
}
}
pub fn blur(&self) {
if let Some(input_ref) = self.input_ref.get_untracked() {
input_ref.blur();
}
}
}